
snippet +- "加减" i
\pm 
endsnippet

snippet -+ "减加" i
\mp 
endsnippet

snippet dc "点乘" i
\cdot 
endsnippet

snippet cc "叉乘"
\times 
endsnippet

snippet chu "除法"
\div 
endsnippet

snippet chu\ "斜杠除"
\setminus 
endsnippet

# 根号
snippet gh "根号" iA
\sqrt{$1} $0
endsnippet

# n次根号
snippet (\d)gh "n次根号" iA
\sqrt[`!p snip.rv = match.group(1)`]{$1} $0
endsnippet

snippet lj "连加" iA
\sum_{$1=$2}^{$3}$0 
endsnippet

snippet sum "连加" iA
\sum_{$1=$2}^{$3}$0 
endsnippet

snippet lc "连乘"
\prod 
endsnippet

snippet bing "并"
\bigcup 
endsnippet

snippet jiao "交"
\bigcap
endsnippet

snippet bjf "闭积分"
\oint
endsnippet

snippet int "积分" i
\int_{$1}^{$2}$0
endsnippet

snippet lim "极限" iA
\lim_{$1 \to $2} $0
endsnippet

snippet ln "ln" iA
\ln 
endsnippet
